LONDON, England (CNN) --The comedian gatecrasher who forced an inquiry into royal security has revealed he kissed Prince William on both cheeks at his 21st birthday party in Windsor Castle.

The claim came as British Home Secretary David Blunkett delivered a statement to Parliament Tuesday into how Aaron Barschak, wearing a dress and an Osama bin Laden beard, climbed over a wall then talked his way into Saturday's fancy dress party.

Blunkett told the House of Commons the "appalling" security lapse was all the more serious in the light of extra measures that were in place at the castle and offered his "deep regret" to the royal family.

Barschak, 36, said he got on stage at the party and took a microphone from Prince William, who was thanking his grandmother, Queen Elizabeth II, and his father, Prince Charles, for the event, which was attended by virtually all of the royal family.

The self-styled "comedy terrorist" said everyone laughed as he launched into his routine. "Then I told them to come and see my show at the Edinburgh Festival next month, and said to William 'We love you,' then kissed him on each cheek," Barschak told the Daily Mail.

He said the alarm was only raised when he left the room and requested champagne at the bar. Barschak was then removed from the castle, west of London, and arrested. He was bailed to return to a London police station next month, but it is unclear what charges, if any, he may face.

The story has dominated British newspapers since the weekend, with several of them noting that with Prince Edward the only senior royal absent from the party, William's uncle could have become King Edward IX had the intruder been a suicide bomber.

The comedian, who was unarmed, said Tuesday that security at the party was non-existent. Not knowing his way inside the castle, Barschak said he simply asked a policeman and was promptly directed to the hall where the party was taking place.

"I was carrying a bag which could have had a bomb in it. I was just yards away from the queen and Prince Charles," Barschak told the Mail.

"If I had been a real terrorist the entire royal family would have been wiped out.

"The whole time I was inside the castle I was expecting to trip an alarm, to be picked up on CCTV, or to be confronted by a policeman," Barschak said.

"I was even worried about being shot by the police if they had mistaken me for a terrorist. But there was nothing."

The breach is the latest in a long history of lapses in royal security. In 1974, an armed mental patient tried to abduct the queen's daughter, Princess Anne, and in 1981 six blank shots were fired at the queen during the annual Trooping of the Colour ceremony.

In 1982 a man climbed up a Buckingham Palace drainpipe to enter the queen's bedroom, chatting with her for several minutes before she was able to summon help.

Blunkett said that, as well as a preliminary report on Saturday's incident that he had received from the Metropolitan Police, a further detailed review had been set in train and would be published within four weeks.